这个反应为什么要用到封管?反应步骤是:ammonium acetate (4.3 g, 55.8 mmol) and sodium cyanoborohydride (0.658 g, 10.46 mmol) were dissolved in 6 mL methanol in a sealed tube, at room temperature and 3.53 g 4Å molecular sieves were added. compound dissolved in 120 mL THF was added under stirring and the reaction mixture was degassed by bubbling with argon for 15 minutes and sealed. After 3 days of sonication, the suspension was filtered over Celite®, washed with DCM and concentrated under reduced pressure. The residue was purified by HPLC。查看更多2个回答 . 12人已关注